diff --git a/requirements.txt b/requirements.txt
index 292290c..a15ddd9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ networkx==2.3
 numpy==1.16.4
 pandas==0.25.1
 Pillow==6.1.0
-protobuf==3.9.1
+protobuf==3.18.3
 pyparsing==2.4.2
 python-dateutil==2.8.0
 python-editor==1.0.4